DICE does operate a "partnership with AMD specifically" with Battlefield 4, but for the purpose of making it an equal experience for AMD. Nvidia nor Intel are being side-lined with Frostbite 3.
You can step down the DEFCON alert, PC gamer. EA's DICE and AMD are only cosy over Battlefield 4, which makes sense given the next-gen platforms are all AMD.
"DICE has a partnership with AMD specifically for Battlefield 4 on PC to showcase and optimize the game for AMD hardware," an EA spokesperson said. "This does not exclude DICE from working with other partners to ensure players have a great experience across a wide set of PCs for all their titles.”
"It makes sense that game developers would focus on AMD hardware with AMD hardware being the backbone of the next console generation. At this time, though, our relationship with DICE and EA is exclusively focused on Battlefield 4 and its performance optimizations for AMD CPUs, GPUs and APUs," AMD representatives said. "Additionally, the AMD Gaming Evolved program undertakes no efforts to prevent our competition from optimizing for games before their release.”
During EA's E3 2013 presser, Battlefield 4 was shown off on PCs infused with AMD chipsets. Xbox One and PlayStation 4 are also installing meaty chunks of AMD architecture in their systems, so it's obviously strategic for DICE to make sure their Frostbite 3 engine is running as smoothly as possible with AMD hardware.
Battlefield 4 releases on Xbox 360, PS4 and PC October 29th, November 1st in EU.